#bodydiv{
    background-color: #0093E9;
    background-image: linear-gradient(160deg, #0093E9 0%, #80D0C7 100%);
    width:100%;
    height:100%;
}
#whitepanel{
    position: relative;
    top: 25%;
    left: 25%;
    width: 50%;
    height: 50%;
}

.indexa{
    border: thick double #32a1ce;
    display: block;
    height: 40%;
    position: relative;
    text-align: center;
    font-family: '宋体';
    font-size: 80px;
    color: #412f2f;
    text-decoration:none;
}
